During the ensuing decades, the abolitionist movement grew in Northern states, and Congress regulated the expansion of slavery as new states were admitted to the Union. Britain banned the importation of African slaves in its colonies in 1807 and abolished slavery in the British Empire in 1833.
There are 3 correct answers to this questions, which are A, B and C. D is incorrect.
Unitary system Is a government that gives all key powers to the national or central government.
Answer: The answer is True hope it helps
Explanation:
Answer:
Democracy consists of four key elements: a political system for choosing and replacing the government through free and fair elections; the active participation of the people, as citizens, in politics and civic life; protection of the human rights of all citizens!